<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>主界面</title>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.css" rel="stylesheet">
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.css" rel="stylesheet">
    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<style>
    .container{
        margin-top: 32px;
        text-align: center;


    }
    .control-label{
        font-size: 13px;
    }
    th{
        text-align: center;
    }
    td{
        vertical-align: middle !important;
    }
    .new{
        display: block;
        margin-bottom: 24px;
    }
    form{
        text-align: left;
    }
</style>
<body>